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Table 3 Predicted means for live performance and dressed yields as affected by variation of diet branched-chain amino acidsa fed from 22 to 35 d to female and male Indian River broilersb

From: Dietary branched-chain amino acid assessment in broilers from 22 to 35 days of age

Treatment Live performancec Dressed yieldsd
Val Ile Leu BW gain, kg/bird Feed:Gain, kg:kg Mortality, % Carcass, % Breast, % Fat, %
Female broilers
 65 58 130 1.122 1.92 0.17 69.71 25.93 2.11
 65 66 110 1.107 1.95 1.18 69.16 26.28 1.94
 65 66 150 1.061 1.96 0.97 69.74 26.46 2.00
 65 74 130 1.124 1.94 1.56 70.09 26.96 1.97
 75 58 110 1.163 1.88 0.31 69.97 26.15 1.92
 75 58 150 1.072 2.00 1.08 69.35 25.88 2.00
 75 66 130 1.088 1.94 0.83 70.64 26.25 1.85
 75 74 110 1.107 1.96 1.98 69.92 26.66 1.93
 75 74 150 1.133 1.92 1.08 69.99 26.18 1.88
 85 58 130 1.121 1.93 0.66 69.79 26.46 1.90
 85 66 110 1.094 1.91 0.97 70.01 26.74 1.86
 85 66 150 1.074 1.97 1.04 68.89 25.82 1.83
 85 74 130 1.124 1.91 0.94 70.00 26.24 1.94
SEe center point 0.0289 0.026 0.509 0.439 0.321 0.099
SE edge points 0.0251 0.023 0.441 0.381 0.278 0.085
Male broilers
 65 58 130 1.382 1.89 1.36 69.83 25.68 1.73
 65 66 110 1.394 1.85 0.92 69.80 26.23 1.74
 65 66 150 1.337 1.89 1.14 70.01 26.17 1.67
 65 74 130 1.379 1.81 −0.48 70.16 26.48 1.61
 75 58 110 1.419 1.86 1.84 70.26 25.78 1.74
 75 58 150 1.349 1.98 2.79 69.41 25.47 1.69
 75 66 130 1.342 1.92 1.47 69.87 25.71 1.86
 75 74 110 1.381 1.86 1.03 69.77 26.23 1.53
 75 74 150 1.403 1.86 1.69 70.27 26.31 1.63
 85 58 130 1.388 1.89 1.07 69.95 25.35 1.72
 85 66 110 1.378 1.84 0.92 70.16 25.80 1.63
 85 66 150 1.386 1.91 2.32 69.59 25.62 1.74
 85 74 130 1.407 1.84 0.99 69.98 25.83 1.57
SEe center point 0.0402 0.034 0.598 0.375 0.293 0.081
SE edge points 0.0348 0.029 0.517 0.325 0.254 0.071
  1. aBranched-chain amino acids represent: dietary digestible levels of valine, isoleucine, and leucine in ratio to dietary digestible lysine
  2. bCoding coefficients for branched-chain amino acids of −, 0, and + were used and arithmetic means were used to estimate predicted means for linear, quadratic, and interaction regression analyses using the RSREG procedure of SAS. Each value represents the predicted mean of 10 replicates (36 birds per replicate). The average body weight for female and male broilers was 1.107 and 1.380, respectively, for both the arithmetic and predicted means
  3. cLive performance represents: body weight (BW) gain in kg per bird from the 15 to 35 d period; feed:gain represents kg feed intake divided by body weight gain for the 15 to 35 d period without the mass of birds that died; and mortality represents percentage birds that died from the 15 to 35 d period
  4. dDressed yields represents: hot carcass, total breast muscles, and abdominal fat relative to live BW of processed birds
  5. eSE represents: standard errors of center point means (valine, isoleucine, and leucine of 75, 66, and 130, respectively) and standard errors of edge point means (additional 12 treatments)